Author(s)

D. Makovička & D. Makovička Jr

Abstract

This paper deals with the application of an elastic elastomer layer at foundation base level in order to eliminate excessive vibrations propagating to the assessed building through the geological environment from an underground railway station structure. The dominant vibrations propagate as non-stationary vibrations through the subsoil from the tube structure in the close vicinity of the analysed building structure. For response analysis, the measured time histories in the construction area were selected and then the typical response was used as an input for a dynamic analysis of the structure. The solution of vibration transfer from the subsoil to the structure is demonstrated using the example of a multistorey reinforced concrete building, founded on a dual foundation plate. An antivibration layer of rubber has been designed between the two plates. Two 3-D numerical models of the building take into account the individual storeys, firstly together with the lay-out of the rubber distribution in the foundation part and secondly without this rubber part. Keywords: technical seismicity, vibro-base insulation, elastomer, dynamic analysis, response prognosis. 1 Introduction The dynamic effects of subsurface traffic propagating through the ground environment into the ambient buildings of urban agglomerations have been acquiring ever increasing importance. Construction firms try to use the areas in the proximity of underground lines because of their lucrative location, usually for residential construction. It is these structures erected in the proximity of

Keywords

technical seismicity, vibro-base insulation, elastomer, dynamic analysis, response prognosis